{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3f83820eed4c70bc59353f11fa66ec3ffd29eb4d562e8768f8f06c0c5dcffc21",
    "signature": "0xd92ff1289ddd5c2a1272a590055af9e8e2d1c24073e1ff33262ed7c6a415a326092c14e72458319d52ff5d7385510eefc24180fee38fe53a8a5eeeeea891d2471c",
    "signer": "0xe7252BdAcfC61196976DDEaF6F7fAE234001856D",
    "userId": "245183811"
  }
}