{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28a77c5b866be610306d678e8976e9b1013a312a8b9033691c2a836acf98c1c6",
    "signature": "0x4477482e606df61d9ce91fdfb6796d65d874bbc90a6e19db5805c31c0013301757a06000a31ada196219907bb1478b71ef339e5ad37010cdeace99c97f1d2a901b",
    "signer": "0x5C9d0b3e14DB4F37efB687B511cd2ec874179A36",
    "userId": "469927725"
  }
}