{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "819568368",
    "entityType": "User",
    "nonce": "0x9767995bcc70c852905a3ffc729e3f8e06281629e734e1c100dd89bd3a1a5205",
    "signature": "0x0d95dce15ff0289fb37a0edf8fbe77e47399fe489c03553325385511ca25430f40dba42712686245ecba8e1fc794d09dbd625f07023a1e566d478f8def47d1021b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}