{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "676581728",
    "entityType": "User",
    "nonce": "0xa7765d24f9914efaf6118ea276c39766e286bd5a8553a9f4e0899be095983587",
    "signature": "0x85106522f596778cba1cee11b50c8afd57840519c22125874da3a75415b0977e7b70c876b1cbd8161e0740fb6dd0184407822b3269f189e6de94758e1e6c6d711b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}