{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389958",
    "entityType": "User",
    "nonce": "0xb42d1048c4c057762c397fca078309d74c86d6fe1a31a2410cd7e4bf8a0860c2",
    "signature": "0x80adadf160daa8d9229811cd73286e714883a34416586574d21fd1807560fa30262001877fe2df609ab61803941ff62a13e92116a71c9a743b274bfc6691cd451c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}