{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7623267",
    "entityType": "User",
    "nonce": "0x2b37fed6238fe38628a993df93f2508df7abb3ff9b0b129b20a62ef72d689054",
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    "signer": "0xBb3c1781B4353D3876c9351dFBca44dABfb092de",
    "userId": "64843590"
  }
}