{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137494",
    "entityType": "User",
    "nonce": "0x13c37eef566854fd747b1763eef97a983c905d1d36ab483149f77eabbabe255e",
    "signature": "0x1d3cae0a28067a0c22a5ba58c5628603596eec8cfe13a4af858728fd0ee8eb434ce7a2f9e388145ee711a8d1481f8d27c332827e3d304d64cb14da6d59c4665d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}