{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1886033",
    "entityType": "User",
    "nonce": "0x12ce215b3f249d4e225b1da3c12fe79ff2c30ecb5106a0fcf7d48d8e604d396c",
    "signature": "0x2a5f45c8d31116ac0545b05c38f32b8c6939cb3a66acd04f1cc9d05921c5fa4d0d910f3fda37b39012970d8be4f8535b6e6346654eb46fc0e401b2e43d7d7d5a1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}