{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339904",
    "entityType": "User",
    "nonce": "0xc0a0fbdc5b0ad9755725e4cab6618816484df0b9e53b0f9e70a877d6a0e5c7cf",
    "signature": "0x799c0167bb00ddffc7eb1b14c56ef044ce0a13608d89a6642e1bb46cd849bcbf33e47db90365c4624f1bda2ea4320a9efa10e5beccc7fdaafd0998f10bdf3b2c1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}