{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "613253063",
    "entityType": "User",
    "nonce": "0x1b4445906daf5fbccb10c5f01604563cf0e49d803d3ba7cb897ab7cd3428ba74",
    "signature": "0x1d74ac90a17ee73336821b96cb8d1d4959d2d9b0fd0d5111814f788d630106641a99c5b9606d0822a3e2bb1ef4c3291a498cb09c013888d6e2769cadb1887bd11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}