{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "131121",
    "entityType": "User",
    "nonce": "0x7bfdc1f109dd88848ed7a1c0ce8469563b898ee06e1f2a9e9a2b2cdd44f5c041",
    "signature": "0x250767a625fdac5c727132677d9c1bb888b5217abff619691509deaa9c9f93a370633aebd398e266b2699a8cf32ab3b6150610c7dd99989548c7f06fa5947a931b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}