{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "126289",
    "entityType": "User",
    "nonce": "0x7ff4f0ac2cac0d477b548a106e2f66f7c3dd34669bf95d744419e897d0d2e135",
    "signature": "0xa5b66dd35ad4e46e5e2a0816142ef4a5388c7d05b6c684eeac5b6cc1f185eb5707bd95f4ddb65f76dd487ffad530f90d11ade519b0bfe7a120c26ee82c0e6dbf1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}