{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0d81fc3eb8b8f27971dd410be619409ac5fcfa4c2d470e3eba2e0f22bc15d452",
    "signature": "0xa1c009556c30b56d27329d69175336ab4d4e8cb40892fc6f158be2353cb1269b55a39ef04464350efe1f14eba31d9b62b714bacf4319bbf729c7636dd70cbc321b",
    "signer": "0x85C61746e3d6E33918b26187EC2B88F83fC4D051",
    "userId": "127298567"
  }
}