{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "159381",
    "entityType": "User",
    "nonce": "0xa753d21f344b904b69e2f87ac5344a440dfef8903d2b689b88db9d53ff3dee09",
    "signature": "0xe2b61d431f91a9f77a29087f6832b272f33a99d5db666dbcda99f3636a81c9782698b065a1f60ad4bf32d3c595ba997bc398ca0127284fbbe56a79dfb68a8a4d1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}