{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3514cbc1354167f86404f28bdc4bc8cfd22cbb890c1fbdd645037ca2ac2d7053",
    "signature": "0x2232535696acae7db123556e1584fb4e500e77f636af36bb638e2c924a4ccb486b5f97e830d1336c0cdccd8eaef61163418d2a27be7a52f5278b7c4dc7e47d541b",
    "signer": "0x4f60489Df5861e8Ab5af441aD0F2B92e3e28915F",
    "userId": "844535935"
  }
}